package ioperation;

import book.Book;
import book.BookList;

import java.util.Scanner;

/**
 * Created with Intellij IDEA
 * Description
 * User:ASUS
 * Date:2024-08-04
 * Time:23:26
 */
public class DelOperation implements IOPeration{
    public void work(BookList bookList){
        System.out.println("删除图书……");
        Scanner scanner=new Scanner(System.in);
        System.out.print("请输入您删除的书名：  ");
        String name=scanner.nextLine();
        int currentSize=bookList.getUsedSize();
        int pos=-1;
        int i=0;
        for (;i<currentSize;i++){
            Book book=bookList.getBooks(i);
            if(book.getName().equals(name)){
                System.out.println("找到了这本书");
                pos=i;
                break;
            }
        }
        if (i==currentSize){
            System.out.println("没有你要删除的书");
            return;
        }
        //开始删除
        for (int j=pos;j<currentSize-1;j++){
            Book book=bookList.getBooks(j+1);
            bookList.setBooks(j,book);
        }
        bookList.setUsedSize(currentSize-1);
    }
}
